The venom directed at the Nationals at the NSW election remains, and with the Shooters now largely out of the picture, One Nation could benefit from the anger.

Internal Nationals polling indicates about 80 per cent of western NSW voters who have abandoned them at the state election would be likely to vote for Pauline Hanson's party federally if there was no Shooters candidate on the ballot.

But just days before nominations close for the federal election, One Nation is yet to declare candidates for federal seats that overlap with the areas where the Nationals took their biggest hits in the state election.

Likewise, it believes that Andrew Gee will hold the seat of Calare, despite the Shooters running their only federal candidate in the seat.

But the party is concerned about the north coast seat of Cowper, where independent Rob Oakeshott is trying to revive his political career, and Page — which is a perennially close race with Labor for the Nationals.

Mr Borsak said the successful state election campaign had exhausted the party's coffers, but it will gear up to make a strategic push at the next federal election in three years' time.

"A party our size has to plan all our resources, save our money and get really good candidates who will have time to establish themselves with voters," he said.

In the meantime, voters keen to turn their back on the Nationals in NSW may be left without an obvious alternative on May 18.